Here is a compiled review of the most notable insider transactions disclosed for Friday, August 28, 2026. The filings show a collection of open-market purchases by company officers and directors at several smaller-cap issuers alongside large sales by controlling and large-shareholder entities in better-known growth companies.
Top buys
Optimum Communications, Inc. (NASDAQ: OPTU)
Neil S. Subin, who serves on the board and is reported as a 10% owner, accumulated Class A Common Stock in multiple transactions executed between July 29, 2026 and August 25, 2026. The purchases totaled roughly $2,454,821 and consisted of 3,032,354 shares acquired at per-share prices ranging from $0.7415 to $0.85. Those shares are held indirectly via Dark Mirage, LP, for which Mr. Subin acts as President, and where MILFAM LLC is named as the investment advisor and manager. The disclosed buying occurred while the share price had gained 20% during the prior week, even though the stock is still down about 56% over the past 12 months. An InvestingPro assessment cited in the filings identifies OPTU among stocks the platform considers most undervalued at current market levels.
REGENXBIO Inc. (NASDAQ: RGNX)
Gregory Austin Ciongoli, a company director, bought common stock in open-market trades across several days in late August 2026, with total disclosed purchases of $949,381. Filing detail shows a purchase on August 26, 2026 of 49,196 shares at a weighted average price of $9.1411 per share, followed by a second tranche on August 27, 2026 of 53,407 shares at a weighted average price of $9.356 per share. Those transactions occurred while the stock was trading near $9.37 and after a roughly 13% decline in the prior week. The same InvestingPro commentary cited in the disclosures characterizes the company as appearing undervalued at current levels.
Pulse Biosciences, Inc. (NASDAQ: PLSE)
Liane Rae Teplitsky, the company’s Chief Operating Officer, increased her holdings via open-market purchases totaling $99,965, as reported on a Form 4 filing with the Securities and Exchange Commission. Ms. Teplitsky bought a combined 2,070 shares across two transactions: 1,036 shares on August 26, 2026 at $48.235 per share, and 1,034 shares on August 28, 2026 at $48.35 per share. At the time of the filings, PLSE was trading close to its 52-week high of $50.90 and had delivered a 206% return over the previous year. The InvestingPro note referenced alongside the disclosure indicates that PLSE appears overvalued relative to its Fair Value.
United States Antimony Corp (UAMY)
Gary C. Evans, Chairman and Chief Executive Officer of United States Antimony Corp, purchased 20,000 shares of common stock on August 28, 2026 at a price of $4.92 per share, for a total transaction value of $98,400. After the acquisition, Mr. Evans is reported to directly hold 2,590,028 shares of the company’s common stock. The purchase was disclosed as occurring while the stock had fallen about 46% over the prior six months and was trading at $4.85, with a reported market capitalization of $711 million.
Battalion Oil Corp (NASDAQ: BATL)
William D. Rogers, a member of Battalion Oil’s board of directors, acquired 70,000 shares in transactions on August 26, 2026 that totaled $91,168. The filings specify a weighted average purchase price of $1.3024 per share with transaction prices ranging from $1.2950 to $1.3100. The purchases were made as the stock traded near its 52-week low of $1.00 and after a roughly 76% decline over the preceding six months. InvestingPro commentary included with the filings notes the stock has experienced a significant decline during this period.
Top sells
Life Time Group Holdings, Inc. (NYSE: LTH)
Three sizable insider dispositions were disclosed on August 26, 2026, each transacted at $43.80 per share. Green LTF Holdings II LP, identified as a director and a 10% owner, sold 2,826,651 shares for proceeds of approximately $126,106,945 and, after the sale, retained 2,974,207 shares directly. Director John Kristofer Galashan and director John G. Danhakl each sold 2,879,154 shares through the same mix of entities. Mr. Galashan’s reported sales included the 2,826,651 shares by Green LTF Holdings II LP, 4,788 shares by LGP Associates VI-A LLC and 47,715 shares by LGP Associates VI-B LLC. Each of the disclosed sales aggregated to approximately $126,106,945. The stock has increased 56% over the past year and 64% year-to-date, trading at $43.51 with a market cap of $9.91 billion. InvestingPro analysis cited with the filings suggests Life Time currently appears overvalued relative to its Fair Value.
Relay Therapeutics, Inc. (NASDAQ: RLAY)
SVF Pauling (Cayman) Ltd, disclosed as a 10% owner and a director, sold 6,000,000 shares of common stock on August 25, 2026 at $19.40 per share, producing gross proceeds of about $116,399,999. After this sale SVF Pauling (Cayman) Ltd is reported to beneficially own 21,904,963 shares of Relay Therapeutics common stock indirectly. The filing notes the company’s stock has climbed approximately 426% over the previous year and now sits with a market capitalization of about $4.26 billion. An InvestingPro assessment attached to the disclosure characterizes RLAY as appearing overvalued versus its Fair Value estimate.
Snowflake Inc. (NASDAQ: SNOW)
Benoit Dageville, a Snowflake director, reported a sale of 50,000 shares on August 26, 2026 at a price of $309.44 per share, with total proceeds disclosed at $15,472,000. On the same date, Mr. Dageville also executed a gift of 16,668 shares, described in the filings as valued at zero. Both the sale and the gift were carried out under a pre-arranged Rule 10b5-1 trading plan adopted April 3, 2026. The company’s shares have risen sharply over recent months, trading near $328 and near a 52-week high of $341.95 after a 95% gain during the prior six months. The InvestingPro note included with the filing describes Snowflake as appearing overvalued at current market levels.
Context and takeaways
Collectively, the disclosed insider activity shows concentrated purchases by executives and directors at smaller companies that have seen material declines over recent periods, while large, organized sales originated from controlling investors and related entities at names that have shown significant gains and high market capitalizations. The filings reference InvestingPro valuation commentary alongside several entries, which characterizes a subset of the purchased stocks as undervalued and flags several of the sold names as overvalued relative to Fair Value estimates.
Monitoring insider filings
Insider trades provide a direct look at how company insiders and major holders are adjusting ownership. Purchases may reflect personal conviction or portfolio repositioning by insiders; conversely, large block sales by major holders can reflect liquidity needs or reallocations rather than a company-specific negative view. Observers and investors often track these filings together with valuation metrics and price action to inform allocation decisions.
The described transactions cover several sectors including communications, biotechnology, medical devices, mining, oil and gas, fitness and cloud software, and they were disclosed in filings covering late July through late August 2026 with specific transaction dates noted in each item above.